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Table · dataset · 2025

The AstroSat UV Deep Field south. I. GOODS-S

Listed in IVOA Registry (Virtual Observatory)

We present the AstroSat UV Deep Field south (AUDFs), an imaging survey using the wide-field Ultraviolet Imaging Telescope on board AstroSat.

Description

AUDFs cover ~236arcmin^2^ of the sky area, including the Great Observatories Origins Deep Survey (GOODS) South field in F154W and N242W filters. The deep and shallow parts of AUDFs have an exposure time ~62000 and ~31000s, respectively, in the F154W filter, while in the N242W filter, they are ~64000 and ~34000s.

These observations reached a 3{sigma} depth of 27.2 and 27.7 AB mag with a 50% completeness limit of 27 and 27.6 AB mag in the F154W and N242W filters, respectively. With the acquired depth, AUDFs is the deepest far- and near-UV imaging data covering the largest area known to date at 1.2"-1.6" spatial resolution. Two primary catalogs were constructed for the F154W and N242W filters, each containing 13495 and 19374 sources brighter than the 3{sigma} detection limit, respectively.

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Our galaxy counts of a power-law slope of ~0.43dex/mag in the N242W filter match well with Hubble Space Telescope/Wide-Field Camera 3/UVIS observations. A wide range of extragalactic science can be achieved with this unique data, such as providing a sample of galaxies emitting ionizing photons in the redshift range of z ~1-3 and beyond, constraining the UV luminosity function, investigating the extended UV emission around star-forming galaxies and UV morphologies for z<1.

The UV catalog will enhance the legacy value of the existing optical/IR imaging and spectroscopic observations from ground- and space-based telescopes on the GOODS South field.

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Documentation and papers

Catalogue records · 2

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Uv
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Astronomical sciences 73% · Imaging 75%
Provenance · 1 source records, 10 field assertions
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IVOA Registry (Virtual Observatory)ivo://cds.vizier/j/apjs/275/2814 d agoJSON v1
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concepts[modality].local:modality:imagingenrichment · IVOA Registrykeyword-concept-rules@1.0.0title+description (75%)
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